Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote:
Yes, on the shader side, the float array is declared as
uniform float altitudes[10];
The array size itself is just passed in as another uniform int.
Thanks for bringing that up. I had forgotten to include the shader side of
things...:)
I've used uniform arrays to pass an array of matrices to do hardware
vertex skinning. Instead of the setArray() method, I just used
setElement(index, matrix) for each matrix (you still need to call
setNumElements() to set the size of the array on the CPU side).
In the shader, they're accessed like this:
uniform mat4 matrixList[36];
Here's the code that accesses them (weight and boneIndex are two extra
vertex attributes):
// Accumulate the vertex's influences by weighted sum into a
// final matrix
for (int i = 0; i < 4; i++)
{
// Get this bone index
bone = int(boneIndex[i]);
// Get the bone's weighted matrix and add it to the final
// matrix
boneMatrix = matrixList[bone];
finalMatrix += boneMatrix * weight[i];
}
--"J"
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